Skip to main content
placeholder image

Investigation of the capacitance minimum of unannealed single-walled carbon nanotube papers in aqueous sodium chloride

Conference Paper


Abstract


  • The electrochemical properties of carbon nanotube (NT) assemblies are relevant for many potential nanotube applications including super-capacitors, batteries, fuel cells and actuators. In this work, the double-layer capacitance of a paper of single-walled carbon nanotubes is determined for a series of concentrations of NaCl in water. The dependence of capacitance on potential was also determined in an effort to locate the potential of zero charge (PZC) for each NaCl concentration. The double-layer capacitance of the NT paper is seen to increase with electrolyte concentration, while the PZC (capacitance minimum) is seen to depend more on the sequence of electrolyte concentration tested (sample history) than on the concentration of electrolyte itself.

Publication Date


  • 2002

Citation


  • Fifield, L. S., Dalton, L. R., & Spinks, G. M. (2002). Investigation of the capacitance minimum of unannealed single-walled carbon nanotube papers in aqueous sodium chloride. In Proceedings of SPIE - The International Society for Optical Engineering Vol. 4807 (pp. 232-240). doi:10.1117/12.456530

Scopus Eid


  • 2-s2.0-0036980633

Start Page


  • 232

End Page


  • 240

Volume


  • 4807

Abstract


  • The electrochemical properties of carbon nanotube (NT) assemblies are relevant for many potential nanotube applications including super-capacitors, batteries, fuel cells and actuators. In this work, the double-layer capacitance of a paper of single-walled carbon nanotubes is determined for a series of concentrations of NaCl in water. The dependence of capacitance on potential was also determined in an effort to locate the potential of zero charge (PZC) for each NaCl concentration. The double-layer capacitance of the NT paper is seen to increase with electrolyte concentration, while the PZC (capacitance minimum) is seen to depend more on the sequence of electrolyte concentration tested (sample history) than on the concentration of electrolyte itself.

Publication Date


  • 2002

Citation


  • Fifield, L. S., Dalton, L. R., & Spinks, G. M. (2002). Investigation of the capacitance minimum of unannealed single-walled carbon nanotube papers in aqueous sodium chloride. In Proceedings of SPIE - The International Society for Optical Engineering Vol. 4807 (pp. 232-240). doi:10.1117/12.456530

Scopus Eid


  • 2-s2.0-0036980633

Start Page


  • 232

End Page


  • 240

Volume


  • 4807